A simple but high quality audio system has been provided to enhance the customers’ shopping experience. Simply connecting the source music player and microphone to an MA2030 mixing amplifier, and the outputs of the MA2030 to the store’s speaker system, results in a well-balanced high performance BGM system that contributes greatly to the overall atmosphere. The MA2030 interface is easy to use and can be directly operated without difficulty, and a remote DCP control panel located at the sales counter adds even further convenience.